Calculate the electric field intensity at apoint 1m away from a charge of 1C in air.

Explanation

Given, q=1C, r =1m, k= `9 xx 10^(9)N-m^(2)//C^(2)` and E= ?
`therefore` Electric field intensity `E= k(q)/(r^(2))= 9 xx 10^(9)xx (1)/(1^(2))`
`rArr E=9 xx 10^(9)N//C`